Different view with tumbler placed on coin in Refraction of Light At Plane Surfaces – Class 10 Science Experiment

Chapter Name: Refraction of Light At Plane Surfaces

Activity Name: Different view with tumbler placed on coin in Refraction of Light At Plane Surfaces

Activity Description:

In this experiment, we will explore the phenomenon of refraction of light by placing a transparent glass tumbler on a coin and observing the coin from the side of the glass. We will also examine how the view of the coin changes when the tumbler is filled with water.

Required Items:

  1. Transparent glass tumbler
  2. Coin
  3. Water

Step by Step Procedure:

  1. Place the coin on a table.
  2. Position the glass tumbler on top of the coin, making sure it stands steadily.
  3. Look at the coin from the side of the glass tumbler. Note your observations.
  4. Fill the glass tumbler with water.
  5. Again, observe the coin from the side of the glass tumbler, looking through the water. Take note of what you observe.

Experiment Observations:

  • When looking at the coin through the side of the glass tumbler without water, you can likely see the coin clearly.
  • When the tumbler is filled with water, the coin may appear to disappear or become less visible.

Precautions:

  1. Handle the glass tumbler and coin with care to avoid any breakage or damage.
  2. Be cautious while pouring water into the tumbler to prevent spills or accidents.

Lesson Learnt from Experiment:

The experiment demonstrates the refraction of light. When light passes from one medium (air) to another medium (water in the tumbler) with different optical densities, it changes its direction. This bending of light causes the apparent position of the coin to shift when viewed through the water-filled tumbler, making the coin look displaced or even invisible.

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